| Tail Number / N-Number | N3274M |
| Manufacturer | BEECH |
| Model | E50 |
| Manufacturer's Serial Number | 57-6061 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 167 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | PITTSBURGH INSTITUTE OF AERONAUTICS |
| Street | 5 ALLEGHENY COUNTY AIRPORT |
| City | WEST MIFFLIN |
| State | PA |
| Zip Code | 15122-2674 |
| Region | Eastern |
| County | Allegheny County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 1982-10-28 |
| Last Action Date | 2021-08-18 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 50705501 |
| Mode S Code Hex | A38B41 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N3274M.
| Tail Number / N-Number | N3274M |
| Manufacturer | PIPER |
| Model | PA-12 |
| Year Built | 1947 |
| Manufacturer's Serial Number | 12-2033 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 82 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | PULLMAN-MOWCOW AIR SERVICE INC |
| Street | PO BOX 289 |
| City | PULLMAN |
| State | WA |
| Zip Code | 99163 |
| Region | Northwest Mountain |
| County | Allegheny County |
| Certificate Issue Date | 1960-06-07 |
| Last Status | Valid Registration |
| Cancellation Date | 1960-06-07 |
| Exported To | CANADA |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N3274M.
| Tail Number / N-Number | N3274M |
| Manufacturer | CESSNA |
| Model | 402C |
| Year Built | 1980 |
| Manufacturer's Serial Number | 402C0302 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Corporation |
| Owner Name | SALE REPORTED |
| Street | HGR 17 MID-CONTINENT AIRPORT |
| City | WICHITA |
| State | KS |
| Zip Code | 67209 |
| Region | Central |
| County | Allegheny County |
| Last Status | Valid Registration |
| Cancellation Date | 1980-08-20 |
| Exported To | MAURITANIA |